1.2 Define and measure angles Flashcards
1
Q
is a part of a line that starts at an endpoint and extends forever in one direction.
A
Ray
2
Q
is formed by two line segments or rays that share the same endpoint.
A
Angle
3
Q
of an angle is the common endpoint of two rays the form the angle.
A
Vertex
4
Q
are two angles in the same plane with a common vertex and a common side, but no common interior points.
A
Adjacent Angle
5
Q
0’ <m<A<90’
A
Acute
6
Q
m<A=90’
A
Right
7
Q
90’<m<A<180’
A
Obtuse
8
Q
m<A=180’
A
Straight
9
Q
The measure of the reflex angle of given acute, right, or obtuse angle will be greater than 180’ and less then 360’
A
Reflex
10
Q
of an angle bisects the angle into 2 even parts.
A
Angle Bisector
11
Q
if the sum of their angle measure is equal to 180’.
A
Supplementary
12
Q
if the sum of their angle measure is equal to 90’
A
Complementary
